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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Nexperia USA Inc. BSS138AKM-QYL

Name: BSS138AKM-QYL
Brand: Nexperia USA Inc.
SKU: BSS138AKM-QYL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSS138AKM-QYL

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: SC-101, SOT-883

Datasheet:: BSS138AKM-QYL.pdf

Description:: BSS138AKM-Q/SOT883/XQFN3

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Product details

Overview

BSS138AKM-QYL from Nexperia is a 60 V, 350 mA N-channel Trench MOSFET in DFN1006-3 (SOT883) package, designed for low-side switching in space-constrained automotive and industrial control circuits. It features logic-level gate drive (V_GS(th) = 0.8–1.5 V), R_DS(on) = 2.2 Ω @ V_GS = 10 V, and AEC-Q101 qualification for under-hood signal routing.

For engineers reviewing the BSS138AKM-QYL datasheet, BSS138AKM-QYL pinout, BSS138AKM-QYL application, or BSS138AKM-QYL equivalent, this device supports high-speed line driving, relay actuation, and load switching where ultra-small footprint, ESD protection (500 V HBM), and thermal robustness on FR4 PCBs are critical selection criteria.

Technical Context

This discrete MOSFET uses Trench technology to achieve low R_DS(on) and fast switching (t_r = 1 ns, t_f = 3 ns) with minimal gate charge (Q_G(tot) = 0.21–0.315 nC). Its sub-threshold conduction is tightly controlled (V_GS(th) typ. 1.1 V at 25 °C), enabling reliable turn-on with 2.5–4.5 V logic signals.

The device integrates an intrinsic source-drain diode (V_SD = 0.98–1.7 V @ I_S = 470 mA) and exhibits avalanche ruggedness (E_AS = 6.8 mJ unclamped), supporting transient energy handling in inductive load switching without external clamping.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum drain-source blocking voltage; supports 24 V automotive bus with 150 % safety margin.
R_DS(on)	2.2 Ω @ V_GS = 10 V, I_D = 100 mA - Enables <100 mW conduction loss at 350 mA DC load current.
V_GS(th)	0.8–1.5 V - Ensures full enhancement with standard 1.8 V/3.3 V/5 V microcontroller GPIO outputs.
Q_G(tot)	0.21–0.315 nC - Allows clean 100 MHz-class switching with low gate driver power demand.
T_j max	150 °C - Rated junction temperature enables operation in under-hood environments up to 125 °C ambient.
ESD HBM	500 V - Integrated protection reduces need for external ESD components in board-level design.
P_tot	350 mW @ T_amb = 25 °C - Sufficient for continuous low-power switching on standard FR4 with 1 cm² drain pad.

Pinout & Package

DFN1006-3 (SOT883) is a leadless, ultra-small surface-mount package measuring 1.0 × 0.6 × 0.48 mm with 0.35 mm pitch and three solderable terminals. Thermal performance relies on direct copper exposure under the drain pad (1 cm² recommended).

Pin/Terminal	Circuit Role	Design Meaning
1	G (Gate)	Control terminal; accepts logic-level input; requires <0.315 nC charge for full turn-on.
2	S (Source)	Reference node for gate drive; connects to system ground or low-side return path.
3	D (Drain)	High-side load connection; thermally coupled to PCB copper; carries switched current up to 350 mA DC.

Key Features

Feature	Design Value
Logic-level gate drive	V_GS(th) ≤ 1.5 V ensures compatibility with 1.8 V/3.3 V MCUs without level-shifting circuitry.
Ultra-fast switching	t_r/t_f ≤ 3 ns minimizes transition losses in PWM-driven loads above 1 MHz.
AEC-Q101 qualified	Validated for automotive applications including engine control modules and body electronics.
Integrated ESD protection	500 V HBM rating eliminates need for discrete TVS diodes in most I/O interface designs.
Trench MOSFET architecture	Delivers lower R_DS(on) per die area than planar MOSFETs-critical for miniaturized PCB layouts.

Applications

Relay Driver

High-Speed Line Driver

Use Scenario: Driving 12 V/24 V electromagnetic relays in automotive body control modules.

IC Role / Device Role / Timing Role: Low-side switch controlling relay coil current (≤300 mA) with precise timing and zero cross-conduction risk.

Use Value: Fast turn-off (t_f = 3 ns) suppresses back-EMF spikes; R_DS(on) = 2.2 Ω limits coil dissipation to <200 mW at rated current.

Use Scenario: Transmitting digital signals across noisy industrial buses (e.g., RS-485 stubs, sensor interfaces).

IC Role / Device Role / Timing Role: Active pull-down element in open-drain bus termination or level-shifted driver stage.

Use Value: Sub-3 ns fall time preserves signal integrity up to 50 Mbps; low C_oss (1.8 pF) minimizes capacitive loading on high-impedance lines.

Low-Side Load Switch

Switching Circuit

Use Scenario: Power gating of peripheral ICs (e.g., sensors, transceivers) in battery-powered telematics units.

IC Role / Device Role / Timing Role: Controlled power path switch enabling software-initiated sleep/wake sequencing.

Use Value: V_GS(th) ≤ 1.5 V guarantees turn-on with MCU GPIO; leakage <1 µA prevents standby current drain.

Use Scenario: Pulse-width modulated dimming of LED strings or solenoid actuation in HVAC actuators.

IC Role / Device Role / Timing Role: Main power switch in buck-derived or linear current-regulated topologies.

Use Value: Avalanche energy rating (6.8 mJ) absorbs inductive kickback without snubber; Q_G < 0.32 nC reduces gate driver supply burden.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel low-voltage switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN10H400SFD-13	R_DS(on) = 3.5 Ω @ V_GS = 4.5 V; SOT-23 package (larger footprint, higher R_th(j-a))	Higher thermal resistance (360 K/W vs. 305 K/W) limits power density in compact layouts.	Prefer when legacy SOT-23 assembly is required and board space permits larger footprint.
BSL307SN	AEC-Q101 qualified; R_DS(on) = 1.8 Ω @ V_GS = 10 V; same DFN1006-3 package but higher ID (500 mA)	Higher current rating allows margin for future derating or transient surges beyond 350 mA.	Choose when system-level reliability requires >30 % current headroom or tighter R_DS(on) tolerance.

Compared with DMN10H400SFD-13 and BSL307SN, BSS138AKM-QYL offers optimal balance of ultra-small size, logic-level compatibility, and automotive qualification-making it preferred for space- and voltage-constrained low-current switching where thermal management is limited to FR4 copper.

Availability

BSS138AKM-QYL is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical device power sequencing requiring stable component supply and AEC-Q101 compliance.

Supply support for BSS138AKM-QYL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with core expertise in advanced packaging and automotive-grade qualification.

The BSS138AKM-QYL belongs to Nexperia's AEC-Q101-qualified TrenchMOS portfolio, engineered specifically for robust, miniaturized switching in automotive signal and power distribution networks.

FAQ

Is BSS138AKM-QYL pin-compatible with the standard BSS138?

No. BSS138AKM-QYL uses the DFN1006-3 (SOT883) leadless package with bottom-terminal layout, whereas the legacy BSS138 is in SOT-23. Pin numbering (G-S-D) matches functionally, but physical mounting, thermal path, and PCB footprint are incompatible without redesign.

What is the maximum continuous drain current at 100 °C ambient?

At T_amb = 100 °C, the maximum continuous drain current is 220 mA, as specified in Table 5 (Limiting values). This reflects thermal derating due to reduced power dissipation capability (P_tot drops from 350 mW at 25 °C to ~125 mW at 100 °C).

Does BSS138AKM-QYL require a gate resistor for typical switching?

A gate resistor is recommended to damp ringing and control dV/dt, especially at >10 MHz switching. With Q_G < 0.32 nC, even a 10 Ω resistor limits peak gate current to <100 mA while maintaining <10 ns rise/fall times-sufficient for most 1–10 MHz PWM applications.

Can BSS138AKM-QYL replace a bipolar transistor in a relay driver?

Yes-its logic-level gate, low R_DS(on), and integrated ESD make it superior to small-signal BJTs in relay drivers. Unlike BJTs, it requires no base current, delivers lower saturation voltage at matched current, and avoids second breakdown risks during inductive turn-off.

BSS138AKM-QYL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-101, SOT-883

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 350mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 10V

Rds On (Max) @ Id, Vgs:: 3Ohm @ 100mA, 10V

Vgs(th) (Max) @ Id:: 1.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 315 pC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 9 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 710mW (Ta), 3.1W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-883

BSS138AKM-QYL FAQ

1.How can I place an order for BSS138AKM-QYL through Aetrix?

Please submit a Request for Quotation (RFQ) for BSS138AKM-QYL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BSS138AKM-QYL reliable?

The price and inventory of BSS138AKM-QYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS138AKM-QYL is usually 5 days.

3.What payment methods are accepted for BSS138AKM-QYL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS138AKM-QYL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSS138AKM-QYL?

BSS138AKM-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSS138AKM-QYL order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BSS138AKM-QYL?

For technical support, including BSS138AKM-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS138AKM-QYL requirements.

6.How does Aetrix verify that BSS138AKM-QYL is sourced from the original manufacturer or authorized distributors?

All BSS138AKM-QYL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BSS138AKM-QYL meets industry standards.

7.What is the process for return or replacement of BSS138AKM-QYL?

All BSS138AKM-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BSS138AKM-QYL, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BSS138AKM-QYL part is unused and in its original packaging.

Return procedure for BSS138AKM-QYL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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